Foundation ditch digging real-time detection method

A real-time detection and foundation pit technology, applied in the field of real-time detection of foundation pit excavation and construction detection, can solve the problems that cannot be monitored in three-dimensional real-time visualization, cannot meet all-round monitoring, etc., achieve intuitive control, prevent accidents, and prevent foundation pits Effects of Construction Accidents

Inactive Publication Date: 2009-06-17
SHANGHAI TUNNEL ENGINEERING CO. LTD.
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Problems solved by technology

However, from the point of view of its use and structural form, it cannot perform three-dimensional real-time visual monitoring, and cannot meet the needs of all-round monitoring for the construction support of large and deep subway foundation pits in cities.

Method used

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  • Foundation ditch digging real-time detection method

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Embodiment Construction

[0022] Now in conjunction with Fig. 1, specifically set forth the specific embodiment of this invention,

[0023] Now in conjunction with accompanying drawing 1, illustrate the specific implementation of the invention: the entrance and exit foundation pit project of a certain subway station, the excavation area of ​​the foundation pit is 1224.2m 2 , the excavation depth is 10.75m below the ground, and three Φ609×16mm steel pipe supports are used. Among them, six supports in two rows and three columns at the top of the foundation pit use controllable hydraulic steel supports (Φ609×16mm). The horizontal spacing of supports is 4500mm, the vertical spacing is 3300mm, and the spacing between the first row of supports and the ground is 1200mm.

[0024] During the excavation of the foundation pit, a real-time detection method was adopted to detect the displacement change of the soil around the pit, the change of the soil pressure around the pit and the uplift of the soil at the botto...

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Abstract

The invention relates to a real-time detection method of excavation of a foundation pit, which is used for detecting the displacement change of the peripheral soil body of the pit in the excavation process of the foundation pit, the change of the pressure of the peripheral soil body of the pit and the change of raised soil body of the bottom of the pit and belongs to the construction engineering field. The invention utilizes a pressure sensor and a displacement sensor to detect the axial force change of a steel support device of an internal hydraulic oil cylinder in real time; an optical distance meter is used for detecting the horizontal distance and longitudinal distance of the periphery of the foundation pit, then a three-dimensional laser scanner is used for monitoring the change of raised or concave surface of the foundation pit in real time and visual monitoring and operation are carried out by a computer. Compared with the existing detection method of the foundation pit, the invention realizes the supporting monitoring of the foundation pit with automatic collection, can greatly improve the degree of automation and the safety of the construction, saves the labor, simultaneously realizes the purpose of construction with high efficiency and can be widely applied to the field of construction of the foundation pit.

Description

Technical field: [0001] The invention relates to a construction detection method, in particular to a real-time detection method for foundation pit excavation, which belongs to the field of construction engineering. Background technique: [0002] At present, there is no mature method for foundation pit support design to calculate the soil deformation around the foundation pit. Accurate and timely detection during construction can guide the excavation and support of the foundation pit, which is conducive to taking emergency measures in time to avoid or Mitigate destructive consequences. [0003] Deep foundation pit detection is a detection method that directly reflects the deformation of foundation pits, and is a commonly used method in information construction. Construction inspection plays a very important role in ensuring the safety of deep foundation pit excavation. The main contents of the detection include the supporting axial force, the displacement settlement deforma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00E02D17/02
Inventor 王鹤林宓佩明黎燕杨磊庄欠伟郝震宇翟一欣段创峰石元奇王伟钢
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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